Nut-lock.



' PATENTED DEC. 11, 1906.

C. C. MOPFET.

' NUT LOCK.

APPLICATION FILED JUNE 25,1906.

\ UNITED srA rns PATENT oFFIon.

,c R ELoUs o. MOFFET, or .BARNEY, NORTH-DAKOTA.

Nu -Loo ToaZZ whom, it may concern: Be it known that 1,.CARMELOUS O. Mor- FET, a citizen of the United States, residing at Barney, in the county ofRichlandfand 5 State of N orth Dakota, have invented certain new and useful Improvements in .Nut.-'

Locks, of which the following is a specifica-" tion, reference being had therein to the accompanying drawings.

nut-locks, and particularly to the construction of a'spring-key. I v

Theobject of the invention is the provision of means for facilitating the locking of a nut 5 uponabolt. H

With this and other objects in view the invention consists of certain novel. construc- Ktions, combinations, and arrangements of parts, as will be hereinafter fully described,

illustrated in the accompanying drawings,

and, more particularly pointed out in the a key. Fig. 7 isa fragmentary view of abolt and nut, showing the key depicted in Fig. 6 in position thereon: for locking the ,nut upon the bolt. e

Referring tothe drawin s, 1 designates bolt provided with a threa ed end, having a longitudinally-extending groove 2 formed therein.v A nut 3 is threaded upon bolt 1. The nut 3 is-provided with a slot 4. The

slot 4 is of the same width as the groove 2.

A peculiarly-constructed spring-key 5 is employed for locking the nut 3 upon the bolt 1. The spring-key 5 is formed .of a piece of resilient material, and said key comprises an inwardly curved or bowed spring-shank 6,

' provided with an integral head'7 The head 7 comprises laterally-extending portions 8 and 9,-more clearly illustrated in the enlarged view of the key depicted in Fig. 4. The po'r-i tion 8 is formed at an acute an le to the shank or body 6 of the key, and t e ortion 9 is 1 I formed at ano'btuse angle to the s ank 6. It

, '5'5 willtherefore be seen that the. head] is x formed awn obliqueanglefor producing a Specification of Letters Patent. Application filed June 25,1906 Seria l'llo. 323,372.

gle, by reason of forming hlS inventlon relates to improvements inpoint at its lower end. While Patented Dec. 1 1, 1906.

highly efficient structure. By reason of forming the head at an oblique angle to the shank 6 said head will'rest'snugly in a grooveformed by any two contiguous threads of the bolt 1. As "the threads of a bolt are not formed around the periphery thereof at right angles, but are of necessity at an oblique an oblique angle the head of the key will be seated snugly within a groove of the bolt formed by contiguous threads, although it may be quickly lifted out of the groove when it is desired to remove the key 6 and-nut 3.

The head 7 is substantially wedge-shaped or tapers from'its upper portion downward to a point 10, Fig. 5. The tapered structure of the head conforms to the walls of two contiguous .threads of the bolt 1, while the'lower pointed end 10 is slightly inwardly curved,

as at 11, so that the head maybe more snugly seated within a groove formed by two threads on the bolt 1, for it is obvious that the periphery of a bolt is not flat but rounded. T erefore I have produced a highly eflicient curved. pointed end, which structure ac my head at an 'structureby the tapered head and inwardly commodates said head to the. periphery of v the bolt. r

Tolock the nut3upon'bolt 1,-thes ringshank 6 is slid into the groove 2 of the olt 1, and as theshankcomesin contact wit the bottom 12 of the grooved portion4-0f th nut 3v pressure is exerted upon thesprin -shank as the keyis forced inward,caus1n t e head to ride over'the, threads of the 130 t. i When pressure is removed from the head, the same will be seated within a groove formed between two contiguous threads, andby reason of the inner end of the-bowed shank bein seated within thegroove 2 and the head between the threads the nut will be securely retained upon the bolt.

In'Fig. 7 the boltltis provided with a deeper'groove 2? than bolt 1. 'The nut 3 however, is similarly constructed to nut 3. Thespring key 13 is similarly constructed to key 5 with the exception of some modifica tions, as will be hereinafter mentioned. The head 14 of key 13 is arranged at an oblique angle to the shank 15, and the head 14 tapers downward to a point 10. Anintegral .depending lug 16 is formed upon head 14, and

said lug 16' tapers from its upper endt'o a t e head'14 is seated within a groove formed between two ITO contiguous threads of bolt 1, the lug 16 seated within the lower ortion of groove 2 of bolt 1', The tapered structure" of lug 16 forming the pointed end; permits the head to slightly bite or grip the bottom ofgroove 2*,

and thereby materially assist in producing a" rigid lock for preventingany movement of the nut 3 upon the bolt 1 when the key is in a locked position.

It will be obvious that the heads of the key depicted inFigsl and 6 are of greater width than the shank of the spring metal keyby reason of the angular positioning of the head relative to the shank. -By reason of the peculiar structure. of the head of the key depicted in Fig. .6 said key securely locks the nut in an adjusted position uponthe bolt, for the body of the head, lugs 16, and the outer end of the shank all per form an important function in securing the nut 3 upon the bolt.

What I claim is 1. In. a nut-lock, the combination'wit-h' a bolt, provided with an elongated groove, a

nut providedlwirh a slot, threaded upon the grooved end of said bolt, of a spring-key seated within the groove of said bolt and slot of said nut, said key comprising a resilient shank inwardly bowed throughout its entire length and an integral head formedat an oblique angle to said shank.

2. The combination with a grooved bolt and a slotted nut, said nut'threaded upon said bolt and having itsslot register with the groove of the same, of a spring-key positioned .within the slot of said nut and groove of said bolt, said key comprising a resilient shank and an integral head, the head formed at an oblique angle to said shank, and said head tapering from its upper portion to a point at its lower portion.

and with an integral head,"saidhead formed at an oblique angle to said shank, said head tapering from its upper end to its lower end, and an integral lug extending from'the lower 4. The combination with a grooved bolt and a slotted nut, said nut threaded upon said bolt and having'its slotregistering w th the groove, of a key positioned within the end of and of less dimensions than said head.

slot of said nut and the groove of said bolt,'

said key comprising a resilient 'shank'inwardly bowed throughout its entire length, an integral head formed upon one end. of said .shank, said head tapering downward to a point, and a tapering lug of less length than and formed integral with said head.

5. The combination with a bolt and a nut, of a key for locking said nut upon said bolt,

said key comprising a spring-shank inwardly bowed throughout its entire length, a head I integral with said shank, said head tapering from a broad, flatnpper portion to a lower,

sharp point, and. a tapering lug provided. with a sharp, lower edge formed integral with said head.

In testimony whereof I hereunto aflix my i signature in presence of two witnesses.

OARMELOUS C." MOFFET.

Witnesses:

-R. N; INK,.

GEOIE. WALLACE 

